山东省招远市第一中学2020-2021学年高一下学期期末学业水平诊断数学试卷 扫描版含答案
BCDEFGH2020-2021学年度第二学期期末学业水平诊断高一数学参考答案一、选择题CACDBCDA二、选择题9.AC10.BCD11.ABD12.ACD三、填空题13.0.94366615.2222ABCACDADBBCDSSSS∆∆∆∆++=283π四、解答题17.证明:(1)连接BD,因为,EF分别为棱,ABAD的中点,11//,22EFBDEFBD=.·································2分11//,22HGBDHGBD=.································4分所以//EFGH且EFGH=.················...
2024-09-01
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